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In recent years, driven by the transformation of consumer lifestyles and the rise of convenience, the global frozen food market has experienced explosive growth. Frozen food packaging plays a key role in maintaining product quality, extending shelf life, and ensuring food safety, from frozen vegetables and meat to ready-to-eat frozen meals. However, many enterprises face challenges such as poor sealing, equipment failure in low-temperature environments, and mismatch between packaging efficiency and production capacity.
This article will rely on Hualian’s professional experience in the frozen food industry, systematically explore the importance of frozen food packaging, the core links of production lines, the characteristics of equipment, practical skills, and customized solutions, and provide enterprises with comprehensive and practical guidance.
The Importance of Frozen Food Packaging
Maintain Product Quality
Frozen food is prone to quality problems such as frostbite, taste loss, and nutrient leakage during storage and transportation. High-quality frozen food packaging can effectively block water, oxygen and external pollutants. For example, the vacuum-sealed packaging of Hualian can control the oxygen permeability (OTR) to less than 1cc/m2/day, effectively preventing the freezing of frozen meat and maintaining its original flavor.
Extend Shelf Life
Properly designed frozen food packaging can extend the shelf life of products by 30% to 50%. The vacuum packaging technology of frozen food removes the air in the packaging, inhibits the growth of microorganisms and slows down chemical reactions, ensuring that frozen products can maintain freshness for 12-18 months under suitable storage conditions.
Compliant with Safety and Regulatory Standards
Frozen food, as an important part of daily diet, needs to meet strict food safety standards (such as FDA, GB 4806). All food contact parts should be made of food-grade 304 stainless steel, and the packaging film has been tested for heavy metal and harmful substance migration, ensuring the safety of the product in the entire supply chain.
Analysis of Core Links in Frozen Food Production Lines
Frozen food packaging is not an independent link, but is deeply integrated with the entire production process, and each link puts forward specific requirements for the packaging scheme:
Raw Material Pretreatment Stage
This stage includes the cleaning, sorting, and cutting of raw materials (such as frozen vegetables and seafood). Core requirements related to packaging:
Temporary storage: Use anti-moisture and anti-dust packaging materials to avoid contamination, It is recommended to use food-grade polyethylene bags when temporarily storing raw materials after pretreatment.
Material transfer: Packaging needs to have sufficient toughness to withstand mechanical handling. Vacuum tray sealing machine can seal pre-processed raw materials in a hard tray to prevent damage during transfer.
Processing & Forming Stage
This stage involves cooking, seasoning, and shaping (e.g., making frozen dumplings, hamburgers). Requirements for packaging:
Heat resistance: The packaging materials of semi-frozen products need to withstand short-term high temperature (up to 80 ℃), and Hualian composite film (PET / PE) can meet this requirement.
Shape adaptation: Non-standard products (such as frozen chicken wings) need flexible packaging. Hualian automatic vacuum packaging machine can adjust sealing parameters to adapt to different product shapes.
Freezing Stage
The core links of frozen food prOduction include rapid freezing (IQF) and deep freezing. Key packaging requirements:
Low temperature resistance: Packaging materials and equipment need to work stably in the environment of -40°C to -18°C.Hualian hot-forming vacuum packaging machine adopts low-temperature resistant components (such as silicone sealing strip) to avoid becoming brittle or failing in low-temperature environment.
Seal after freezing: After freezing, make sure to seal it tightly to prevent air from entering. The Hualian tray sealing machine is equipped with a pressure-adjustable sealing system, which can ensure sealing even if the product surface has ice crystals.
Characteristics of Different Frozen Food Packaging Equipment
Máquina automática de envasado al vacío
Core features: High degree of automation (production capacity of 30-5o bags/minute), stable vacuum (-0.09~ -0.06MPa), compatible with PE, PA/PE and other packaging films.
Advantages of freezing food: Efficient removal of air, which can effectively prevent product frostbite; It supports continuous operation and is suitable for large-scale production of frozen meat, seafood and other products.
Hualian advantages: Our Máquina automática de envasado al vacío equipped with low-temperature vacuum pump and intelligent control system, can automatically adjust the vacuum time according to the water content of the product (for example, for frozen dumplings with high water content, the vacuum time can be appropriately extended to ensure the sealing effect).
Thermoforming Vacuum Packaging Machine
Core features: Thermal forming, filling, vacuum sealing, and cutting in one; The shape of the tray can be customized (rectangular, square, and other shapes are available).
Advantages of frozen food adaptability: The rigid packaging produced has strong sealing and anti-leakage, which can protect fragile products such as frozen pastries; The Thermoforming process can ensure that the film is closely attached to the tray, avoiding the formation of ice crystals in the packaging.
Hualian advantage: Double heating system, even in low temperature environment, can ensure the uniformity of film molding; The company’s food thermoforming vacuum packaging machine is compatible with recyclable PP trays, which is in line with the trend of sustainable development.
Selladora de bandejas
Core features: Precise temperature control (80-200°C), fast sealing speed (15-30 trays/minute), compatible with PP, PET, aluminum and other materials trays.
Advantages of frozen food adaptability: Vacuum tray sealer: suitable for frozen meat packaging, can achieve long-term preservation;Modified Atmosphere Tray Sealer: By replacing the air in the packaging with nitrogen / carbon dioxide mixed gas, it can effectively maintain the color of frozen fruits and vegetables. Hualian MAP tray sealer machines have a gas replacement rate of ≥98%.
Hualian advantage: All tray sealer machines are equipped with anti-stick ice design, which can avoid the adhesion of frozen product residues on the sealing surface, ensuring the continuous and efficient operation of the equipment.
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3 Key Tips for Frozen Food Packaging
Main Requirements for Frozen Food Packaging
Barrier performance: Prioritize packaging materials with high resistance to moisture and oxygen (such as PA / PE composite film, aluminum foil composite film);
Low temperature resistance: Ensure that the material does not crack or break in an environment of -40 ℃, and the equipment components (seal strips, sensors) need to have the ability to resist low temperatures;
Leakage prevention and puncture resistance: For sharp products such as frozen fish with spines, it is necessary to use a thick film with a thickness of ≥80μm or a hard tray.
Selection of Frozen Food Packaging Materials
Common frozen food packaging and applicable scenarios are as follows:
| Material Type | Key Properties | Suitable Frozen Products |
| PE (Polyethylene) | Flexible,low-cost, moisture-resistant | Frozen vegetables, dumplings |
| PA/PE Composite | High oxygen barrier, puncture-resistant | Frozen meat, seafood |
| Aluminum Foil Composite | Ultimate barrier, light-proof | High-end frozen products |
How to Choose the Right Frozen Food Packaging Equipment
Combined with production scale: Small-scale production (daily capacity < 5000 packs) → semi-automatic tray sealing machine;Mass production (daily production capacity > 20,000 packs) → fully automatic thermoforming vacuum packaging machine o automatic vacuum packaging machine integrated into the production line;
Matching product characteristics: Fragile products → choose thermoforming packaging machine (rigid tray protection);Liquid-containing products (such as frozen soups) → Choose a vacuum tray sealing machine (anti-leakage design);
Prioritize low-temperature adaptability: Ensure that the equipment can operate stably in low-temperature environments.
Customize a Food Packaging Solution for Your Company
Hualian provides customized frozen food packaging solutions according to the actual needs of enterprises, and the specific process is as follows:
Needs Assessment
On-site research: Analyze the enterprise’s production scale, product type (such as the difference between individual frozen vegetables and frozen meals), and existing production line bottlenecks;
Sample testing: Free packaging testing services (such as frozen beef vacuum sealing test, frozen strawberry CO2 packaging test) are provided to verify the feasibility of the scheme.
Project Design
Equipment configuration: Taking a frozen dumpling factory with a production capacity of 50,000 packs per day as an example, Hualian recommends the following configuration: automatic vacuum packaging machine + food Envasadora de termoformado + conveyor line, which realizes fully automatic production;
Material matching: For high-end frozen seafood, it is recommended to use the combination of aluminum foil composite film and gas-tight tray sealing machine, which can balance the preservation effect and product appearance.
Common Frozen Food Packaging Challenges & Hualian’s Solutions
Problem of poor packaging sealing
Causes: Ice on the product surface, improper sealing temperature, wear of sealing strip;
Hualian Solutions:
Equipment upgrade: Choose a tray sealing machine with preheating function, melt the ice crystals on the product surface before sealing;
Material optimization: Recommend PA / PE composite film with excellent cold sealing performance.
Preventive maintenance: Regular inspection and replacement of seals.
Equipment failure problem in low-temperature environment
Cause: Plastic parts are brittle at low temperatures and the sensor fails in cold air;
Hualian Solutions:
Component selection: All equipment components are made of low-temperature resistant materials (such as silicone gasket, stainless steel bracket);
Intelligent protection: Hualian thermoforming vacuum packaging machine is equipped with a temperature monitoring system. When the ambient temperature is too low, the heating module will automatically start to protect the equipment components.
Mismatch Between Packaging Efficiency and Production Capacity
Cause: The speed of the packaging machine is lower than the production capacity of the freezing line, resulting in product accumulation;
Hualian Solutions:
Efficiency upgrade: For a frozen vegetable factory with a daily production capacity of 30,000 kg, it is recommended to use the Hualian high-speed automatic vacuum packaging machine (50 packages/minute) to match the production capacity of the frozen line;
Production line integration: Connect the packaging equipment with the freezing line through the conveying system, realize synchronous operation, and reduce the manual handling link.
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Preguntas frecuentes
Can Hualian packaging equipment handle high-oil frozen products (such as frozen fried chicken)?
Yes. Hualian automatic vacuum packaging machine adopts oil-resistant sealing strip and oil-resistant film (PA / PE composite film), which can prevent oil penetration and ensure sealing effect; The equipment is also equipped with a dedicated oil control and cleaning function to keep the equipment clean.
How long is the shelf life of the frozen food packaged with the Hualian solution?
It depends on the product type: frozen meat (vacuum-packed) → 12-15 months;Frozen vegetables (modified atmosphere packaging) → 8-12 months;Frozen ready-to-eat meals (heat-formed packaging) → 6-10 months.
Does Hualian provide environmentally friendly frozen food packaging materials?
Provided. We have options such as recyclable PP trays, biodegradable PE film, and aluminum-free composite film to help enterprises comply with environmental regulations (such as the EU’s single-use plastic directive).
Conclusión
The packaging of frozen food is a system engineering that requires close collaboration between materials, equipment, and production processes. With its professional experience in the frozen food industry, Hualian not only provides high-quality frozen food packaging machines and packaging materials, but also provides customized solutions for common problems such as poor sealing and low-temperature equipment failure.
Whether you are a small frozen food workshop or a large-scale production enterprise, Hualian can create packaging solutions that balance quality, efficiency, and cost for you. Contact us now to get a free demand assessment and sample testing service – let’s work together to enhance your competitiveness in the frozen food market!
